Antifriction-bearing.



A. A. WEIGEL.

ANTIFRICTON BEARING. APPLICATION FILED IUNE8. I9'I4.

A. A. WEIGEL.

ANTIFRICTION BEARING.v APPLICATION mso JUNE 8* 1914.

` 1,226,729. Patented May 22,1917.

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ARNOLD A. WEIGEL, OF CHICAGO, ILLINOISQASSIGNOR TO ALBERT G. WELCH, 0F

OHICAGO, ILLINOIS, TRUSTEE OF EDWIN S. WOODS, DECF-ASEE,`

aNTmnIcrioN-BEAnrNG.

Specification of Letters Patent.

Patented May 22, 1917.

Application filed .Tune 8, 1914. Serial No. 843,686.

'0 all ywhom t may concern:

Be it known that I, ARNOLD A. W'EIGEL, a citizen of the United States, and-a resident of Chicago, in the county of Cook and State of Illinois, have invented certain'neW and useful Improvements in Antifriction-Bearings; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention' relates to improvements in antifriction bearings and consists of the matters hereinafter described and more particularly pointed out in the appended claims.

The antifriction bearing, as shown herein, is designed especially for u'seas a side bearing to be interposed between the car bolster and truck' bolster of a railway car, and as illustrated, is embodied in a form wherein it is to be applied or attached to the truck bolster. The invention, however, involves several features which are applicable not alone to a construction in `,which the bearing is attached to theJ truck bolster but also to antifriction elements of the bearing shownin y a position when rocked from the center. f

Fig. 3 is a view representing a horizontal section through Fig. 1 in a plane indicated by the line 3 3 thereof.

Fig. 4: represents an end elevation of the bearing, as illustrated inv Fig. 2.

Fig. 5 is a view representing a vertical section through Fig. 1 inA a plane indicated by the line 5*5 thereof.

Fig. 6 is a perspective view of the casing of the bearing with part of one wall broken away; to show the inner construction.

Fig. 7 is a perspective viewuf One O "the antfrietion elements. u

Fig. 8 is a perspective view of one of the followers used in the embodiment of the invention shown in the drawings.

Referring now to that embodiment of my invention illustrated in the drawings, 10 indicatesthe casing` whichcontains the antifriction elements of the bearing and which, as shown herein, is attached to the truck bolster 11 of arailroad car. 12 indicates the body bolster of the car. Said body bolster is usually protected in the Part to be engaged bythe antifriction elements of the bearing with a wear plate in a familiar manner.

The antifriction casing, as shown herein, contains two antifriction elements, 13, 13, but it will, of course, be understood that said antifriction bearing may include any number of antifriction elements, depending upon theload 'to be transmitted between the car bodybolster and the truck bolster. Said antifriction elements are segments of cylinders yand have top' and bottom cylindric bearing surfaces 133,13", respectively, and rest, in the embodiment of the invention illustrated, upon the bottom of the casing.

The casing 10 has upright sidewalls 14, 14, end walls 15, 15 and a bottom wall 16. The bottom wall of the casing which rests upon the body of the truck bolster and receives the downward thrust of the antifriction elements, is preferably protected by means of the wear plate 17.

The end walls 15, 15 of the casing are provided with recessed bosses 18, 18. 19 indicates a rod extending longitudinally through the casing and fixed at its ends in the" end vwallsla1 18d of said bosses. The bosses 18,

1S' are `preferably reinforced in their connection with the casing 10 by means of `ribs The antifriction elements 13, 13 are each provided with a transverselyextending slot 20, throughwhichthe rod 19 extends. Said slots have suiiicient width (see Fig. 3) to provide free play between the rod 19 and the side walls 21 of saidslots. The. slots are placed symmetrically with reference to the horizontal central axes of the antifriction elements and each slot has top and bottom walls 22, 22, which diverge in either direction from the central vertical diameter lof the antifriction elements in order to prevent said top and bottom walls from striking the rod when the antifriction element is oscillated through its full amplitude of movement.

23 indicates that side of the antifriction element which is next to and adapted to contact with the adjacent antifrictionelement. Said side is curved inwardly toward the vertical central axial plane of the antifriction element from the lines in which the top and bottom bearing surfaces of said element terminate, as shown at 23a, 23u in such manner that as the adjacent element rocks, the like lin'e of said adjacent element will rideupon, without binding against the said side, as clearly illustrated in Figs. 1 and 2. By providing an intermediate reverse curve of the same radius as indicated at 23h, when the antifriction elements have been rocked through the full amplitude of their intended movementa the side of one will engage and lock against the side of the other, (see Fig. 2,) thus limiting and preventing further movement of the two elements.

In order to determine the curvature of that .side of each rocking antifriction element which is next to the adjacent element, the length of the are of the bearing surface, that is to say the arc through which the antifriction element is intended yto rock is first determined. Then with the ends of said arc and the height of the antifriction element fixed and the form of the proximate sides still undetermined, the two elements are constructed in successive positions which they occupy as they are rocked on one or the other of their bearing surfaces. The successive points occupiedby the end of the bearing are of the one element are then noted, as it is intended that the points thus successively marked yoft1 are to define the proximate surface of the adjacent antifriction element, the ordinates defining each `of said points with reference to the vertical diameter 'of the adjacent antifriction element in the successive corresponding positions which it occupies, are carefully measureduz--that is to say, the ordinate representing the distance from each of said points to the vertical diameter of the antifriction element and the ordinate representing the distance from the point where said first-named ordinate intersects said diameter and the center of the antifriction element. These ordinates are then laid off ona figure defining the height and the top and bottom bearing surfaces of an antifriction element of the intended size. The curve passing through said points is then drawn, the last point corresponding to the full rocking movement of the antifriction element. Such a curve is laid off in connection with both the top and bottom bearing surfaces,

Maniconstructed with the sides defined in this way, the interacting relation between the two elements heretofore described, will result.

In addition to this locking feature of the antifriction element, each end antifriction element of the series is provided adjacent that bearing surface 131 which engages the wear plate of the casing in which it is contained, with laterally spaced extensions or lugs 24 which have bearing surfaces 24a that are tangential to the bearing surface 13b of said element in the rocking movement of the series of elements. Manifestly, when the set of antifriction elements are rocked toward one end of the casing, the flat bearing surfaces 24 of said lugs will engage against the wear plate and prevent further rolling, rocking movement of the end antifriction element, and it, in turn, will prevent the further rocking movement of the other antifriction elements. In addition, the lugs 21 are provided with upright bearing surfaces 24" at right angles to the bearing surface 21 which are adapted to engage the upright end wall of the casing when said antifriction elements have been rocked to the limit of their movement.

To provide for the return of the antifriction elements to a normal upright position in the center of the casing, I provide the following:-25, 25 indicate followers adapted for engagement with the end antifriction elements of the series in the casing. Said followers consist of channeled blocks which embrace the rod 19, and which have apertured ends 2G through which said rod extends. The other ends of said blocks are provided with upright shoulders 27 which engage depending shoulders 28 at the inner ends of the bosses 18 of the casing to limit the movement of said blocks 25 toward the center of the casing. 29 indicates expansion coiled springs mounted on the rod 19 and adapted to act between the end Walls 1Sa of the bosses and the ends 26 of the blocks 25. The said end walls of the bosses have suitably formed slots 27a (see F ig. 4) to permit the passage through said walls of the blocks 25 when in the rocking movement of the series of antifriction elements, said blocks are required to move beyond the limit of the casing.

Manifestly from this construction, the springs cause the followers 25 to yieldingly engage the end antifriction elements in such manner that when the series of antifriction elements have been rocked from central position the springs will cause the follower at that end of the casing toward which the antifriction elements have been rocked to return said antifriction elements to their normal position.v The ends 26 of the followers have rounded bearing surfaces 26a for `engageinent with the proximate side of the end antifriction element which is rounded as indicated at Qbso as to provide a friction bearing between the i followers and the antifriction elementswithwhich they engage.

`adapted to provide for a`predetermined amplitude of rocking movement of said rockers, cach of said rockers having that side, which isadjacent to the next rocker, curved inwardly from the termil'ial lines of its bear- `ing surfaces toward its vertical, diametric plane, and having an intermediate, joining, reversed-curved surface of the same radius whereby said rockers may rock in engaging relation through sul'istantially thc full predetermined amplitude of their rocking n'xovelnent.

2, An antifriction bearing comprising a zasing, a pluality of closely spaced antifriction rockers located in said casing and `having top and bottom bearing surfaces of a length adapted to permita rocking movement through a predetermined angle, each of said rockers having that side, which is adjacent to the next rocker, curved inwardly from the terminal lines of its bearing surfaces toward its vertical, diametric plane, and having an intermediate, joining, re-

4versed-curved surface of the same radius ment through a predetermined angle, each of said rockers having that side which is adjacent to the neXt rocker, curved inwardly from the terminal lines of its bearing surface toward its vertical, diametric plane, and having 1an intermediate, joining, reversed-curved surface of the same radius, whereby the side of one element may bear against the proximate side of the adjacent element throughout a rocking movement through the full angle determined by the length of their bearing surfaces.

4i. An antifriction bearing comprising a casing, a plurality of closely spaced antifriction rockers located in said casing and having top and bottom bearing surfaces of a length adapted to permit rocking movement through a predetermined angle, each of said rockers having that side which is adjacent to the next rocker, curved inwardly from the terminal lines of its bearing surface toward its vertical, diametric plane, and having an intermediate, joining, reversed-curved surface of the same radius, whereby the side of one element may bear against the proximate side of the adjacent element throughout a rocking movement through the full angle determined by the length of their bearing surfaces and acts to stop the further movement of said element when the same has been rocked through its predetermined limit of movement.

5; An antifriction bearing comprising a casing, a plurality of closely spaced rocking antifriction elements located in said casing and having top and bottom bearing surfaces of a length adapted to permit a rocking movement through a predetermined angle, each of said rockers having that side which is adjacent to the next rocker, curved inwardly from the terminal lines of its bearing surface toward its vertical, diametric plane, and having an intermediate, joining, reversed-curved surface of the same radius, whereby the side of one element may bear against the proximate side of the adjacent element throughout a rocking movement through the full angle determined by the length of their bearing surfaces, and means for returning said antifriction element to a vertical position when released.

6. An antifriction bearing comprising a casing, a plurality of closely spaced antifriction rockers located in said casing and having top and bottom bearing surfaces of a length adapted to permit rocking movement through a predetermined angle, each of said rockers having that side which is adjacent to the next rocker. curved inwardly frpm the terminal lines of its bearing surface toward its vertical, diametric plane, and having an intermediate, joining, reversed-curved surface of the same radius, whereby the side of one element may bear against the proximate side of the adjacent element throughout the full angle of rocking movement, determined by the length of their bearing surfaces, and acts to stop the further movement of said element when the same has been rocked through its predetermined limit of movement, and means for returning said antifriction elements to a vertical position when released.

7. An antifriction bearing comprising a casing, a plurality of closely spaced rocking antifriction elements located in said casing and having top and bottom bearing surfaces of a length to permit of a rocking movement through a predetermined angle, each of said rockers having that side which is adjacent to the next rocker, curved inwardly from the terminal lines of its bearing surface toward its vertical, diametric plane, and having an intermediate, joining, reversed-curved surface of the same radius, whereby the side of one element may bear against the proximate side of the adjacent element through a rocking movement through the full angle determined by the length of their bearing surfaces and spring controlled followers located in each end of the casingA and engaged with the end rockers.

S. In an antifriction bearing comprising a. casing, a plurality of closely spaced antifriction rockers located in said casing and having top and bottom bearing surfaces adapted to permit a rocking movement through a predetermined angle, means pro viding interacting bearing parts between the adjacent sides of said rocking elements whereby said elements are permitted to rock together through substantially the full amount of their predetermined angle of rocking movement, the end rocking elements each being provided on the side adjacent the end of the casing with an extension having a flat bearing surface tangential to the bearing surface of said element.

9. An antifriction bearing comprising a casing, a plurality of closely spaced rockers located in said casing and having top and bottom bearing surfaces adapted to permit rocking movement through a predetermined angle, each of said rockers having that side which is adjacent to the next rocker, curved inwardly from the terminal lines of its bearv ing surface toward its vertical, diametric plane, and having an intermediate, joining, reversed-curved surface of the saine radius, whereby the side of one element bears against the proximate side of the adjacent day of May.

ARNOLD A. WEIGEL. itnesses I). H. Anrunns, KALL W. DOLL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of latents,

Washington, D. C. 

